Water Pump On-Vehicle Inspection


  1. INSPECT FOR COOLANT LEAK

  2. INSPECT ENGINE WATER PUMP ASSEMBLY

  3. INSPECT FLUID COUPLING ASSEMBLY

Water Pump -- On-Vehicle Inspection



1. INSPECT FOR COOLANT LEAK
HINT:
  1. The sliding surface inside the engine water pump assembly is lubricated by engine coolant. As some engine coolant is discharged during normal operation, coolant residue (solids) may be found on the drain plug or the bottom of the engine water pump assembly. Also, engine coolant may leak if foreign matter enters the engine water pump assembly, however the sealing performance will recover when the foreign matter is pushed out or breaks into fine pieces. In this case, check the area around the engine water pump assembly.
  2. Before performing this inspection, check that there is no coolant leaking from any parts other than the engine water pump assembly. If there are leaks, inspect those areas.
  3. Perform this inspection when the engine is cold.

  1. Visually check the engine water pump assembly.

    1. Check that engine coolant is not dripping from the engine water pump assembly.

      HINT:
      1. If engine coolant is dripping, replace the engine water pump assembly.
      2. If engine coolant is not dripping, perform the following check.


  1. Inspect the area around the engine water pump assembly.

    HINT:
    Check for deposits around the drain plug of the engine water pump assembly.

    1. Remove the fan pulley (LandCruiser RM000002SKP00SX.html).



      2. Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gd-Ftv Cooling.Cooling System.Water Pump On-Vehicle Inspection

    2. Press a piece of paper towel against the drain plug or deposits on the lip of the drain plug and check that the paper towel is not wet.

      Text in Illustration
      *a
      		Drain Plug
      *b
      		Air Hole
      HINT:
      1. If the thin paper towel is wet, replace the engine water pump assembly.
      2. If the thin paper towel is dry, clean the area around the engine water pump assembly.


2. INSPECT ENGINE WATER PUMP ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Turn the water pump pulley and check that the water pump bearing moves smoothly and quietly.
    If necessary, replace the engine water pump assembly.

  1. Install the fan pulley (LandCruiser RM000002SKN00SX.html).



3. INSPECT FLUID COUPLING ASSEMBLY

  1. Remove the fan with fluid coupling assembly (LandCruiser RM000002SKP00SX.html).



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Remove the 4 nuts and fan from the fluid coupling assembly.



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Check that the fluid coupling assembly is not damaged and that no silicon oil leaks.
    If necessary, replace the fluid coupling assembly.

  1. Install the fan to the fluid coupling assembly with the 4 nuts.

    Torque:
    6.0 N*m{61 kgf*cm, 53 in.*lbf}

  1. Install the fan with fluid coupling assembly (LandCruiser RM000002SKN00SX.html).